Kant - Sure was helpful for me, thanks!
That article explains a lot of what is going on in my setup which was a bit mysterious to me previously. I'm seeing exactly HALF the refresh rate (having used 60HZ and 75 HZ) as my maximum 2D frame rate and one third for 3D though. I wonder if there is some video card (or other) setting that would allow getting the FPS equal to the refresh rate? Suspect I'm missing something key here, but there are a LOT of settings on my 7900GS. I found a guide to the settings via another post on SUBSIM and think I have several of them correct (triple buffering, multi/super sampling, etc.), but maybe I'm missing a critical one which would double my FPS? Not that I NEED it, but it would be NICE to optimize of course!
PS - The Nvidia Forceware settings information is at:
http://www.tweakguides.com/NVFORCE_6.html